Diving atEast Reef (Cambodia)
Cambodia's coastal waters, particularly around the Koh Rong island group, hold remnants of centuries of maritime activity. East Reef, a shallow coral expanse near Saracen Bay, invites divers to explore a more tranquil, natural aspect of this historical region. It provides an accessible entry point to the Gulf of Thailand's underwater world, catering to both new and experienced divers seeking a relaxed experience. This site is especially favored for foundational dive training and recreational exploration.
Tonight's objective overview for East Reef shows an air temperature of 27°C. The measured surface conditions include wave heights around 0.5 m. This environmental data is logged for the close of the day.
Dive Site Location & Key Facts
Everything you need to know about this dive site.
Dive Site Overview
East Reef offers a shallow fringing reef system off Cambodia’s Koh Rong/Koh Rong Samloem island group, delivering an easy recreational boat dive experience. The reef's expansive coral garden terrain begins close to the surface, making this a comfortable location for foundational check dives, open water training, and relaxed underwater photography.
Dives here typically follow a gentle circuit, guiding divers over the reef top and along its edges where the vibrant coral landscape gradually gives way to sandy and rubble areas. This transition zone is particularly interesting for spotting bottom dwellers. Hard-coral formations, an array of colorful sponges, and scattered bommies define the underwater topography, providing ample shelter for a diverse range of reef fish.
Maximum depths at the site consistently stay within 8 to 10 m / 26 to 33 ft. This shallow profile supports extended bottom times, allowing for unhurried exploration and observation.
Water temperatures are remarkably stable and warm, frequently between 28-30°C / 82-86°F throughout the year, ensuring thermal comfort. On the surface, air temperatures average 27-29°C / 81-84°F during the most active diving periods, complementing the pleasant underwater conditions.
East Reef
Conditions are Good
Best Dive Window
Optimal conditions expected
Current conditions near East Reef show 27° air, 30° sea temperature, 0.5 m waves, and 26 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
Clear visibility becomes a primary draw at East Reef, and conditions are often best during the northeast monsoon season, which spans from December through April. This period brings sunny, dry weather and significantly less rainfall, typically below 3 mm / 0.12 inches monthly, reducing sediment runoff. Dive scores during these months are consistently rated as 'Excellent,' correlating with calmer seas where average wave heights hover around 0.4 meters or less. While water temperatures are stable at 28-30°C / 82-86°F throughout the year, air temperatures peak from February to April, reaching up to 29°C / 84°F. Though visibility can range widely across Cambodia's sites, the dry season generally provides the clearest conditions for exploring East Reef's sunlit shallows.
PEAK SEASON SCORE
Scores combine air & water temps, waves, wind & rainfall for overall conditions.
BEST MONTHS TO DIVE
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Currents at East Reef are typically mild, making this an accessible site for divers of varying experience levels, including those undertaking PADI Open Water Diver certification or Discover Scuba Diving programs. The site's shallow profile, with maximum depths of 8-10 m / 26-33 ft, ensures a relaxed experience with minimal physical demands. It's an excellent location for underwater photography, especially given the abundant light penetration in the coral gardens. Water temperatures are consistently warm, staying around 28-30°C / 82-86°F, minimizing the need for thick thermal protection. Wave heights are generally low, particularly during the dry season, although conditions can become choppier during monsoon periods from May to November, potentially affecting boat travel and surface comfort.
Dive Difficulty & Safety Guidelines
While East Reef presents few inherent hazards, divers should always practice excellent buoyancy control to protect the delicate coral structures. It's crucial to avoid contact with the reef and its inhabitants. As with any dive location in Cambodia, research dive operators thoroughly; service quality can vary. A surface marker buoy (SMB) is recommended for all dives, especially given the boat entry and exit procedures, ensuring surface visibility to boat traffic. Being a shallow site, decompression sickness is less of a concern, but proper ascent rates and safety stops remain fundamental practices for every dive.
Recommended Equipment
- Dive Computer
- DSMB
This gear list is based on verified equipment signals for East Reef, Cambodia. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
In these water temperatures, dive skin or rash guard is a common choice for recreational diving. A hood or vest is suggested for sensitive divers due to surface winds. Longer dive profiles can make thermal protection more important than short exploratory dives.
Conditions at East Reef currently place the water temperature near 30°C (86°F). Surface air temperatures are resting at 27°C (81°F).
Environmental conditions appear stable for the near future.
Due to technical issues with our weather providers, data hasn't been fetched for over 48 hours. The data above reflects the conditions at the time of the last successful fetch.
Emergency & Medical Support
Essential information to help you plan your dive trip to East Reef.
Hyperbaric chambers are a critical part of dive safety infrastructure. Availability varies significantly by region, and not all dive areas have immediate access.
Before diving, it's recommended to:
- confirm nearest medical facilities
- check emergency procedures with local dive operators
- ensure dive insurance covers evacuation if required
Divers Alert Network
Diving emergency assistance available through DAN World.
+1-919-684-9111- 24/7 emergency hotline
- Diving medical assistance
- Evacuation coordination
Emergency contacts are provided for reference. Always verify local emergency services before diving.
Marine Life at East Reef
East Reef's extensive coral garden terrain defines a vibrant underwater landscape, creating a rich habitat for numerous marine species. Divers often encounter an abundance of diverse reef fish, frequently observed schooling among the hard-coral structures, sponges, and scattered bommies. The site is a reliable location for spotting stingrays, which glide gracefully across the sandy patches bordering the reef. Clownfish are a common sight, found interacting with their host anemones, while giant pufferfish frequently make their presence known. For those interested in smaller details, numerous nudibranchs inhabit the reef, providing flashes of color for macro photography enthusiasts exploring the intricate coral formations.
Dive Sites Near East Reef
View all dive sites in CambodiaDiscover more underwater gems in this area.
Dive Centers Near East Reef
Working Hours
Today: 08:00 - 18:00
Scuba Nation Diving Centre Cambodia
Cambodia Diving Group
Koh Rong Dive Center
Blue Lagoon Divers Cambodia
Watersports Cambodia Dive Centre
Khmer Dive Group
Freedom Dive Center
Nearest Airports
Nearest airports to help plan travel to this dive area.
Search Flights
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Search Flights on ExpediaFrequently Asked Questions
What is the typical depth range at East Reef?
East Reef is a shallow dive site. Depths typically range from 8 to 10 m / 26 to 33 ft, making it suitable for divers of all experience levels.
What is the water temperature like?
Water temperatures at East Reef are consistently warm throughout the year, usually staying between 28-30°C / 82-86°F. This allows for comfortable diving with minimal thermal protection.
What kind of marine life can I expect to see?
The reef hosts a variety of marine life including stingrays, clownfish, and giant pufferfish. You'll also likely spot numerous nudibranchs and a dense population of reef fish among the corals.
What dive certifications are suitable for East Reef?
East Reef is ideal for PADI Open Water Divers and those participating in Discover Scuba Diving experiences. Its shallow, calm conditions make it excellent for training and relaxed recreational dives.
How do divers access East Reef?
Access to East Reef is typically by boat. It's a popular site in the Koh Rong/Koh Rong Samloem island group, often reached via dive operators from nearby bays or the main islands.
When is the best time of year to dive East Reef?
The optimal diving season runs from December through April during the dry, northeast monsoon period. Conditions during these months offer the best visibility, calmer seas, and minimal rainfall.
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East Reef
Conditions are Good
Best Dive Window
Optimal conditions expected
Current conditions near East Reef show 27° air, 30° sea temperature, 0.5 m waves, and 26 km/h wind. Forecast data is refreshed regularly to ensure accuracy.